vf_normalize.c File Reference

#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	NormalizeContext

Macros
#define	OFFSET(x)   offsetof(NormalizeContext, x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Functions
	AVFILTER_DEFINE_CLASS (normalize)
static void	normalize (NormalizeContext *s, AVFrame *in, AVFrame *out)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static av_cold void	uninit (AVFilterContext *ctx)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)

Variables
static const AVOption	normalize_options []
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
AVFilter	ff_vf_normalize

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(NormalizeContext, x)

Definition at line 107 of file vf_normalize.c.

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 108 of file vf_normalize.c.

Function Documentation

AVFILTER_DEFINE_CLASS

(

normalize

)

static void normalize ( NormalizeContext *  s, AVFrame *  in, AVFrame *  out  )

static

Definition at line 124 of file vf_normalize.c.

Referenced by compute_lpc_coefs(), and filter_frame().

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 255 of file vf_normalize.c.

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 282 of file vf_normalize.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 313 of file vf_normalize.c.

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  in  )

static

Definition at line 323 of file vf_normalize.c.

Variable Documentation

const AVOption normalize_options[]

static

Initial value:

= {
    { "blackpt",  "output color to which darkest input color is mapped",  OFFSET(blackpt), AV_OPT_TYPE_COLOR, { .str = "black" }, CHAR_MIN, CHAR_MAX, FLAGS },
    { "whitept",  "output color to which brightest input color is mapped",  OFFSET(whitept), AV_OPT_TYPE_COLOR, { .str = "white" }, CHAR_MIN, CHAR_MAX, FLAGS },
    { "smoothing",  "amount of temporal smoothing of the input range, to reduce flicker", OFFSET(smoothing), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX/8, FLAGS },
    { "independence", "proportion of independent to linked channel normalization", OFFSET(independence), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, 1.0, FLAGS },
    { "strength", "strength of filter, from no effect to full normalization", OFFSET(strength), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, 1.0, FLAGS },
    { NULL }
}

Definition at line 110 of file vf_normalize.c.

const AVFilterPad inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
        .config_props = config_input,
    },
    { NULL }
}

Definition at line 359 of file vf_normalize.c.

const AVFilterPad outputs[]

static

Initial value:

= {
    {
        .name = "default",
        .type = AVMEDIA_TYPE_VIDEO,
    },
    { NULL }
}

Definition at line 369 of file vf_normalize.c.

AVFilter ff_vf_normalize

Initial value:

= {
    .name          = "normalize",
    .description   = NULL_IF_CONFIG_SMALL("Normalize RGB video."),
    .priv_size     = sizeof(NormalizeContext),
    .priv_class    = &normalize_class,
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = inputs,
    .outputs       = outputs,
}

Definition at line 377 of file vf_normalize.c.